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High‐performance aromatic polyimides for inertial confinement fusion experiments
Author(s) -
Marsacq Didier,
Dufour Bruno,
Blondel Benoît,
Lavergne Yolande,
Thevenot Gille
Publication year - 2000
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/1097-0126(200009)49:9<1021::aid-pi522>3.0.co;2-d
Subject(s) - polyimide , copolymer , materials science , polymer chemistry , polymer , polymerization , composite material , chemical engineering , layer (electronics) , engineering
Inertial confinement fusion (ICF) experiments have been conducted in a polymer capsule in which nuclear products were located. To vary the mechanical properties of polyimide, various polyimide blends and copolymers have been prepared and compared. In the first case, polyimide blends are obtained by mixing different poly(amic acid) solutions (PMDA‐ODA and PMDA‐PDA) in NMP. In the second case, dianhydride (PMDA) and various diamines (ODA and PDA) are directly mixed in the polymerization medium to form a copolymer in NMP solution. The Young's modulus and coefficient of thermal expansion have been measured for the various polyimide film specimens. It is shown that the mechanical properties of a polyimide strongly depend on its composition. The effect of the poly(amic acid) preparation process (blends or copolymers) on the mechanical properties is not significant, and the blending of poly(amic acid) solutions leads to a copolymer. © 2000 Society of Chemical Industry